// Copyright (C) Kumo inc. and its affiliates.
// Author: Jeff.li lijippy@163.com
// All rights reserved.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.
//

#pragma once

#include <nebula/numeric/int_util_overflow.h>

namespace nebula::internal {

    static inline turbo::Status CheckSliceParams(int64_t object_length, int64_t slice_offset,
                                                 int64_t slice_length, const char *object_name) {
        if (TURBO_UNLIKELY(slice_offset < 0)) {
            return turbo::out_of_range_error("Negative ", object_name, " slice offset");
        }
        if (TURBO_UNLIKELY(slice_length < 0)) {
            return turbo::out_of_range_error("Negative ", object_name, " slice length");
        }
        int64_t offset_plus_length;
        if (TURBO_UNLIKELY(
                internal::AddWithOverflow(slice_offset, slice_length, &offset_plus_length))) {
            return turbo::out_of_range_error(object_name, " slice would overflow");
        }
        if (TURBO_UNLIKELY(offset_plus_length > object_length)) {
            return turbo::out_of_range_error(object_name, " slice would exceed ", object_name,
                                             " length");
        }
        return turbo::OkStatus();
    }

}  // namespace nebula::internal
